Dutch Scooby lover

iTrader: (3)

The aftermarket flywheels are much lighter (around 4,5 kg)
then the 12 kg oe one.
Because the engine has to accelerate much less rotating mass
it revs more quicker hence it gets you out of the sub 3000 rpm range (the dead zone LOL)faster.

You dont gain much hp but because youre on boost faster it feels a lot faster. Also if you get of the gas the engine isnt kept going as much as with the original flywheel which can lead to locking up the wheels.

The only major downside is that the equalizing effect that the heavy oe flywheel has is almost gone, this leeds to a hunting idle and the pedal gets more of a on/off feel to it.

If im wrong in my statements please correct me.

Phew what a text , i hope you understand what i mean; my english isnt so good.

Jarno
my 98 wr blue GTT

[Edited by Dutch Scooby lover - 6/4/2003 6:13:10 PM]

Gridlock Mikey

And does it really? or does it just make the car seem like it's accelerating faster?

Mikey

Pitch Black

Jarno

Your command of English is much better than a lot of peoples' on here!

hypoluxa

A flywheel wheel stores rotational kinetic energy, the faster it spins the more energy it stores. If you reduce the weight of the flywheel or its "moment of inertia" then it's ability to store or soak-up energy (that would otherwise be used to propel you in a forward motion) is reduced. The greater the radius that the mass is removed from the more pronounced the effect will be, so it's not quite as simple as just looking at a the quoted weight when buying.

In road speak It basically lightens your car. The shorter the gearing the lighter it becomes. So the effect in 1st gear will be far more pronouced then 5th.

richrussell

The downside is that there's less of a flywheel effect due to it being lighter, so at low revs (ie crawling in traffic) the car can be a bit jerky, as the ECU's fighting to keep the engine from stalling. Also engine braking down hills isn't as good.

The upside is that it'll rev more freely, both up and down, so feels a lot more responsive.

Rich.

Gridlock Mikey

Cheers guys

Mikey

Leslie

Its just less mass to accelerate with the engine Mikey.

Les

Gridlock Mikey

I reckon then that the cons outweigh the pro's especially given that i use the car everyday

I knew there would be a down side. Garages bang on about throttle response, spool up time, acceleration etc, but not one mentioned jerkyness, ECU struggling to keep the engine ticking over etc. [img]images/smilies/mad.gif[/img] Best leave that stuff to race teams (Where the real benefits are)

Mikey

dougies549

Hi Mikey

I have just had the clutch and flywheel done so now know what to speak about ( I think)

The flywheel is about 11.5 kilo's standard and i had a 5.75 kilo one fitted, i think the best of both world's would be a 9 kilo one.

Yes i was worried about the idea beging lumby and the other issue of jerkyness, the ideal is spot on there is no prob's there, as for the jerkyness well at time's it feels a bit like a paddle clutch if you come of the clutch to quickly then u can stall it very easy, but once you get used to the bite/pick up point there isn't a problem, my wife even got in drove it without any prob's after beging told that she probably woudn't like it.

If you have the clutch out to be done then it is deffo worth doing the fly wheel to save penny's

Cheers Dougie

Franx

Would you not loose some torque as well, with a lightened flywheel?
or am I wrong?

stockcar

we modify std wheels to around 8.5kgs......ran them in various competition and road cars with no ill effects.......the choice is yours!!
alyn - asperformance.com

bigsinky

where is mycroft when u need him

THOMO

made a huge diffrence mid range pull is unreal.you should know mikey your always chasing me lol